BYOB is an acronym with several similar yet related expansions. The acronym is most often associated with a social gathering (a party) at which the host will not be providing alcoholic beverages; the guests are invited to bring a beverage of their choice for their own consumption.
Common expansions of the acronym include:
Bring Your Own Bottle
Bring Your Own Booze
Bring Your Own Beer
Bring Your Own Beverage
A South African word of Afrikaans origin, literally translated as "bush-befucked".
It means suffering from Post-Traumatic Stress Disorder, or having difficulty adjusting to civilian life after fighting in the bush in the border wars and counter-insurgency operations that South Africa engaged in during the 1970s and 1980s in Namibia, Angola and Mozambique.
Bring Yer Own Buzz
Battle Yer Own Beef
Bounce Yer Own Boobies
Bend Yer Own Barricades
Blaze Yer Own Barby
Beat Yer Own Boredom
Banish Yer Own Beasts
Bury Yer Own Bigotry
Be Yer Own Boss
Believe Yer Own Bullshit
Blend Yer Own Beverage Blur Yer Own Boundaries Bust Yer Own Balls
Butter Yer Own Bread
Burst Yer Own Bubble
Burn Yer Own Braincells Build Yer Own Bridges
Birth Yer Own Beliefs
Bless Yer Own Brethren
Become Yer Own Buddah